Reversing-gearing.



's. M. W001 RBVERSING GEARING. APPLICATION FILED JUNE 30, 1909.

996, 1 89. Patented June 27, 1911.

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I wiizzecww: [fez/662%? UNH STANLEY M. WOOD, 0F HARRISON, OHIO.

REVERSING-GEARING.

To all whom it may concern:

Be it known that I, STANLEY M. Woon, a citizen of the United States, residing at Harrison, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Reversing- Gearing, of which the following is a specification.

It is the object of my invention to provide reversing gearing which is particularly applicable in transmitting comparatively great power with comparatively slow movement in the driven member, and is applicable for instance for the drive of traction engines.

My invention provides a drive which is especially easy-running and economical in power consumption, and by means of it a reversal of direction of movement in the driven member may be accomplished in easy manner by the enmeshing of comparatively slowly rotating gears, and I accomplish these objects in novel manner to be hereinafter described.

The invention will be readily understood from the following description and claims, and from the drawing, in which latter:

Figure 1 is a side elevation of my improved device. Fig. 2 is a vertical section on the line ez of Fig. 1, showing the' clutch between the driving element and the driving member or pinion; and, Fig. 3 is a rear elevation of my improved device, partly in section on a line corresponding to the line y-y of Fig. 2, showing the gears mounted on the lever in full lines for driving the driven member in one direction, and in dotted lines for driving the driven member in the opposite direction.

1 is the frame of a suitable device upon which my improved mechanism may be mounted, and in the form shown represents the frame, partly broken away, of a traction engine.

2 is a drive-shaft, and in the form shown represents the drive-shaft of an internal combustion motor, shown broken away at 3.

4 is a driving pinion in which the driveshaft normally rotates loosely. This pinion represents the driving member of the train of gearing. The pinion 4 may however be caused to rotate with said drive-shaft by a clutch 5, which is shown as comprising clutch-shoes 6 mounted on arms 7 pivoted at 8 to the hub 9 of the pinion 4.

A lever 10 is pivoted at 11 to the frame.

Specification of Letters Patent.

Application filed June 30, 1909.

Patented June 27, 1911.

Serial No. 505,167.

A collar 12 is loosely mounted in an annular groove 13 in the hub 9. The lever 10 is articulated to the collar by bolts 14. Inward movement of the lever causes spreading of the arms, causing the clutch-shoes to contact the inner face of a ring 15 of a driving element, shown as a fly-wheel 16, thereby clamping the pinion 4 to said flywheel and causing the pinion to rotate. A latch 17 positions the lever.

A gear 18 is journaled on a stud 19 at one end of a lever 20, the other end of said lever having a gear 21 mounted thereon on a stud 22. The gear 18 is comparatively of much greater diameter than the driving pinion 4. The lever 20 is pivoted to the frame on a stud 23 intermediate of the ends of the lever. The lever 20 has an arm 24 extending therefrom which may be positioned in either of the notches 25 26 27 of a positioning bar 28 secured to the frame. The arm 24 is preferably of resilient material so that upon shifting the same it will spring into the notches of the positioning-bar.

The gear 18 is in continual mesh with the driving pinion 4. The gear 21 is in continual mesh with the gear 18. Either gear 18 or gear 21 may be brought into mesh with a spur-gear 29, which is the driven member, by swinging said gears 18 21 about the pivot of the lever 20, which is located between the rotary axes of said gears. The pivotal axis of the lever is in vertical plane with the rotary axis of the driving pinion 4, as indicated by the dotted line a in Fig. 3. When the large gear 18 on the lever is in mesh with the spur-gear 29, or driven member, the rotary axis of said gear 18 is at one side of the vertical plane of the pivotal axis of the lever 20, and when the gear 21, at the other end of said lever, is in mesh with said spurgear 29, the rotary axis of said gear 18 is at the other side of the vertical plane of the pivotal axis of said lever 20. The gear 18 being a large gear and the pivotal axis of the lever 20 being in coincident vertical plane with the rotary axis of the driving pinion 4, the teeth of said gear 18 are kept in continuous mesh with theteeth of the driving pinion 4, and the change of meshing, to cause reversal of rotation of the driven pinion, takes place between comparatively slowly rotating gears, namely, between the large spur-gear 18, or its mating gear 21, and the driven spur-gear 29.

Upon the swinging of said lever for reversing the direction of rotation of the driven member, the spur-gear at one end of said lever will be caused to move away from said spur-gear 29, whereas the spur-gear at the other end of said lever will be caused to move toward said spur-gear 29, which, with the relation between the driving pinion 4 and the gear 18 enables me to accomplish the reversal of direction of drive with a minimum amount of movement in said spurgears, thereby enabling me to employ especially large gears and but few of these gears. The power from the spur-gear 29 is transmitted to the mechanism which it is desired to drive.

Having thus fully described my invention,

what I claim as new and desire to secure by Letters Patent is:

1. In reversing gearing of the character described, the combination of a driving pinion, a driven gear, a rockable lever pivoted intermediate of its ends, a gear j ournaled at one end of said lever in continuous mesh with said pinion, a gear at the other end of said lever in train with said last-named gear, and means for rocking said rockable lever for causing either of said gears thereon to be brought into meshing relation with said driven gear, substantially as described.

2. In reversing gearing of the character described, the combination of a spur-pinion acting as a driving member, a spur-gear acting as a driven-member, a rockable lever pivoted intermediate of its ends, a compara tively large gear and a comparatively small gear in meshing relation with each other and journaled at opposed ends of said lever, said comparatively large gear being in continuous mesh with said first-named spurpinion, and means for rocking said lever whereby either of said gears on said lever is brought into meshing relation with said first-named spur-gear, substantially as de scribed.

3. In reversing gearing of the character described, the combination of a spur-pinion acting as a driving member, a spur-gear acting as a driven member, a rockable lever, a comparatively large gear and a comparat-ively small gear in meshing relation with each other journaled at opposite ends of said lever, the pivotal axis of said lever being in a plane perpendicular to the rotary axis of said spur-pinion acting as a driving member, means for rocking said lever about said pivot for bringing either of said gears on said lever into meshing relation with said spur-gear acting as a driven member, the said comparatively large gear on said lever being in continuous mesh with said spurpinion acting as a driving member, the rotary axis of said comparatively large gear on said lever located at one side of said perpendicular plane when in mesh with said spur-gear acting as a driven member and located at the other side of said perpendicular plane when said comparatively small gear on said lever is in mesh with said spur-gear acting as a driven-member, substantially as described.

l. In a reversing mechanism of the character described, the combination of a driveshaft, a spur-pinion loose with relation to said drive-shaft, a rockable lever pivoted intermediate of its ends, a comparatively large spur-gear at one end of said lever in continuous mesh with said spur-pinion, a comparatively small spur-gear at the other end of said lever in continuous mesh with said gear at said first-named end of said lever, a driven spur-gear, means for rocking said rockable lever for causing either of the gears thereon to be brought into meshing relation with said driven spur-gear, the rotary axis of said comparatively large spurgear on said lever being located to one side of a right line intersecting the rotary axis of said first-named spur pinion and the pivotal axis of said lever when said comparatively large spur-gear is in meshing relation with said driven spur-gear, and being located at the other side of said right line when said comparatively small spur-gear on said lever is in mesh with said driven spur gear, and a friction clutch between said drive-shaft and first-named spur-pinion for selectively causing driving connection between said drive-shaft and first-named spur-pinion and release of driving connection therebetween, substantially as described.

In testimony whereof, I have signed my name hereto in the Presence of two subscribing witnesses.

STANLEY M. WOOD.

Witnesses:

JACOB H. SIPE, JACOB Sonora.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

